COMMITMENTS AND CONTINGENCIES - Summary of Product Warranty Accrual (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Commitments and Contingencies Disclosure [Abstract]
Length of Product Warranty			12 months
Movement in Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance	$ 2,088	$ 1,449	$ 1,786	$ 1,691
Warranties issued in the period	598	593	1,749	1,467
Costs to service warranties	(932)	(349)	(2,614)	(1,456)
Warranty accrual adjustments	507	(158)	1,340	(167)
Ending balance	$ 2,261	$ 1,535	$ 2,261	$ 1,535